arrays - 根据选择删除存储在数组中的项目

Question

我正在尝试根据所选选项删除存储在数组中的项目，以更好地理解阅读这段代码:

component.html

<fnd-extended-select label="Tipo Prodotto:" [(ngModel)]="landingType" name="tipoprodotto">
    <fnd-option *ngFor="let p of agreementfilter?.landingPageTypes" [value]="p.id">{{p.description}}</fnd-option>
</fnd-extended-select>

Component.ts

  deleteMsg() {
    this.agreementfilter.landingPageTypes.splice(1, 1);
  }

基本上使用这段代码，当我按下按钮删除项目时，只会删除数组的 FIRST 对象。

我需要的:删除我从数组中选择的项目。

我有什么样的选择来解决这个问题？

感谢您的帮助!

Answer 1

组件.html

<fnd-extended-select label="Tipo Prodotto:" [(ngModel)]="landingType" 
 name="tipoprodotto">
<fnd-option *ngFor="let p of agreementfilter?.landingPageTypes; let i = index" 
  [value]="i">{{p.description}}</fnd-option></fnd-extended-select> <button (click)="deleteMsg(landingType)"></button>

组件.ts

 landingType;

  public deleteMsg(id: number) {
    // finds index of item to be deleted and then deletes the item from the array
    this.landingPageTypes.splice(id, 1);

    // output array to console with item deleted
    console.log('landingPageTypes: ', this.landingPageTypes);
  }

public change(id) {
  // change select and index store in variable
  this.landingType = id;
  console.log(id);
}

查看示例 stackblitz